#include<stdio.h>

int sum(int x , int y)
{
    int z = x+y;
    return z;
}

int main()
{
    printf("hello!\n");
    int a = 2 , b = 3,c = 0,i=0;
    for(; i<50;++i)
    {
     c = sum(a,b);
    a++;
    b++;
    }
    printf("%d\n",c);
    return 0;
}
